MBP 2021 14": macOS 12.3 update frozen

[mosh.jinton]

I have a 14" MBP, 1TB/32GB model, which I tried to install the 12.3 update on today (along with another firmware update of some sort which I don't remember exactly.) However the update is refusing to complete, or in fact progress at all. On the first attempt, I had the black screen with the Apple logo and the progress bar and nothing else, and the bar did not appear to move at all in nearly an hour. Cmd-L was not bringing up any sort of log so I restarted the computer and tried again, and the same happened, and again when I started in safe mode. So I now can't get 'into' my laptop. I know updates can take a while but there was absolutely zero movement of the progress bar in over an hour. Also this Mac has not had a logic board replacement, which I know has caused issues for others with 12.3.

Any ideas what's happening or what I can try?

 

[chabig]

Start again but don't interrupt it this time. Better yet, go out of the house for a few hours so you aren't tempted to watch the progress bar. If you come back four hours later and it hasn't completed, let us know. It's possible that you hosed the system. If so, you might need a second Mac from which to revive it using Apple's Configurator 2.

 

[mosh.jinton]

Start again but don't interrupt it this time. Better yet, go out of the house for a few hours so you aren't tempted to watch the progress bar. If you come back four hours later and it hasn't completed, let us know. It's possible that you hosed the system. If so, you might need a second Mac from which to revive it using Apple's Configurator 2.

Thanks, will do, but should Cmd-L not be doing something?

 

[chabig]

Thanks, will do, but should Cmd-L not be doing something?

I personally have never heard of using Cmd-L during a system update. I wouldn't expect it to do anything since the updates don't have user interfaces.

 

[astorre]

this update also took longer for me and also progress bar looked stuck, just wait

 

[mosh.jinton]

I personally have never heard of using Cmd-L during a system update. I wouldn't expect it to do anything since the updates don't have user interfaces.

Oh fair. I've seen it mentioned in a number of places online that Cmd-L displays a log during an update which you can use to judge whether anything is happening, hence asking.

 

[mosh.jinton]

Start again but don't interrupt it this time. Better yet, go out of the house for a few hours so you aren't tempted to watch the progress bar. If you come back four hours later and it hasn't completed, let us know. It's possible that you hosed the system. If so, you might need a second Mac from which to revive it using Apple's Configurator 2.

Yeah, four hours gone now and it's still not moved on at all. I have a second Mac I can try and use, though it's an old 2012 model.